Aida, stage 4: Treviglio → Verona
On stage 4 (Treviglio → Verona, 148 km) the best month is October: 80% of days were dry with highs of 10–30 °C; the wind barely favours either direction (0.4 km/h on average; ERA5 2006–2025, 9:00–18:00).
Weather by month
| Month | Good days | Rain days ≥ 1 mm | Rain, mm | Avg high | Days ≥ 30 °C | Days < 10 °C | Daylight, h |
|---|---|---|---|---|---|---|---|
| January | 14% | 14% | 57 | 7 °C | 0% | 85% | 9.1 † |
| February | 42% | 19% | 73 | 9 °C | 0% | 55% | 10.3 † |
| March | 70% | 20% | 72 | 13 °C | 0% | 18% | 11.8 |
| April | 72% | 27% | 87 | 18 °C | 0% | 2% | 13.5 |
| May | 67% | 32% | 121 | 22 °C | 1% | 0% | 14.9 |
| June | 54% | 29% | 94 | 26 °C | 18% | 0% | 15.7 |
| July | 44% | 23% | 91 | 29 °C | 36% | 0% | 15.3 |
| August | 47% | 25% | 99 | 28 °C | 31% | 0% | 14.1 |
| September | 77% | 22% | 108 | 24 °C | 1% | 0% | 12.5 |
| October | 80% | 20% | 104 | 18 °C | 0% | 0% | 10.8 † |
| November | 61% | 20% | 112 | 12 °C | 0% | 24% | 9.4 † |
| December | 17% | 14% | 68 | 8 °C | 0% | 82% | 8.7 † |
Best months are all months within 3 percentage points of the best one. † less than 11 hours of daylight — long stages get tight.
Wind by month
| Month | Wind Treviglio → Verona, km/h | Headwind > 15 km/h, Treviglio → Verona | Headwind > 15 km/h, Verona → Treviglio | Better way |
|---|---|---|---|---|
| January | +0.8 | 0% | 0% | either |
| February | +0.4 | 0% | 1% | either |
| March | +0.1 | 1% | 1% | either |
| April | −0.8 | 1% | 1% | either |
| May | 0.0 | 0% | 0% | either |
| June | +0.3 | 0% | 0% | either |
| July | −0.1 | 0% | 0% | either |
| August | −0.4 | 0% | 0% | either |
| September | −0.5 | 0% | 0% | either |
| October | −0.4 | 1% | 0% | either |
| November | 0.0 | 1% | 0% | either |
| December | +1.0 | 0% | 0% | either |
Along the route (sections of about 25 km)
| km | Heading | Tailwind in October, km/h |
|---|---|---|
| 358–383 | E | −0.2 |
| 383–408 | E | 0.0 |
| 408–434 | SE | −0.7 |
| 434–459 | E | −0.7 |
| 459–484 | E | −0.7 |
| 484–507 | E | +0.1 |
Other stages
- Susa → Turin 114 km
- Turin → Novara 122 km
- Novara → Treviglio 123 km
- Treviglio → Verona 148 km
- Verona → Padua 124 km
- Padua → Oderzo 122 km
- Oderzo → Udine 114 km
- Udine → Cormons 80 km
- Cormons → Treviso 7 km
How to read the numbers
Wind is the 10 m wind of a 25-km grid cell, daytime hours 9:00–18:00 local solar time; at saddle height in a sheltered valley it is weaker, on a coast or ridge stronger. A positive value is a tailwind. ERA5 slightly over-counts days with ≥ 1 mm of rain (by about 5–7 percentage points) and underestimates daily highs by 1–2 °C. Good day = less than 1 mm of rain between 9:00 and 18:00 (riding hours, local solar time) and a high between 10 and 30 °C; rain at night or in the evening does not spoil it.